As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
A FLIGHT WAS CANCELLED AFTER THE FLIGHT CREW WAS UNABLE TO START THE NR 1 ENGINE. THE FLIGHT CREW PUSHED THE STARTER BUTTON AND NOTED NO ENGINE ROTATION. THE MAINTENANCE VENDOR TROUBLE SHOT AND DETERMINED THAT THE NR 1 STARTER/GENERATOR WAS DEFECTIVE. THE S/G WAS REPLACED WITH AN OVERHAULED UNIT.